(USA) Systems and Infrastructure Engineer III, Information Security

Walmart; Sunnyvale (CA); On-site; USD 117,000 - 234,000; Full time

Benefits offered by this job

Health benefits

401(k)

Paid time off

Job summary

Walmart in Sunnyvale, CA is seeking an Systems and Infrastructure Engineer III in Information Security to strengthen the security of all web ingress points across global ecommerce platforms. The role focuses on developing and tuning WAF policies, improving client-side fingerprinting, and defending against active cyber-attacks.

You will collaborate with network and site reliability teams to build and operate the infrastructure that supports Walmart’s web security posture and ensure secure,

Qualifications

• Experience/ability to create, tune and enforce WAF policies for global e-commerce sites.
• Knowledge of network protocols and web security fundamentals.
• Ability to manage security infrastructure across multiple regions.

Responsibilities

• Create, tune, and enforce Web Application Firewall (WAF) policies across global eCommerce sites.
• Continuously evaluate and adapt ingress security policies to evolving threat landscape.
• Mature client-side evaluation and fingerprinting capabilities.
• Assess and manage protection strategies during active cyber-attacks.
• Control and monitor scripted traffic across all digital properties.
• Collaborate with network and site reliability teams to secure ingress points.
• Build, deploy, and manage security infrastructure and operations.

Skills

WAF management

DDoS mitigation

TCP/IP/HTTPS/SSL

CDNs

client-side fingerprinting

log management (Splunk/Kibana/ArcSight

scripting

cloud platforms (Azure/GCP)

Education

Bachelor's degree in computer science, information technology, engineering, information systems, cybersecurity, or related area

Tools

Splunk

Kibana

ArcSight

Job description

(USA) Systems and Infrastructure Engineer III, Information Security

Sunnyvale, CA

Multiple locations

Herndon, VA: $108,000 - $216,000/yr

Sunnyvale, CA: $117,000 - $234,000/yr

Regular/ Permanent

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Herndon, VA: $108,000 - $216,000/yr

Sunnyvale, CA: $117,000 - $234,000/yr

Regular/ Permanent

Position Summary...

ThisroleisresponsibleforstrengtheningthesecurityofallwebingresspointsacrossglobaleCommerceplatforms.ItfocusesondevelopingandtuningWAFpolicies,enhancingclient‑sidedetectionandfingerprinting,managingdefensesduringactivecyber‑attacks,andcontrollingscriptedtraffic.Thepositionalsocollaboratescloselywithnetworkandsitereliabilityteamswhilebuildingandoperatingtheinfrastructurethatsupportstheorganization’soverallwebsecurityposture.

About the team:

TheEdgeIngressSecurityteamplaysacriticalroleinprotectingourglobaleCommerceplatformsfromawiderangeofonlinethreats.Fromdefendingagainstweb-basedandDDoSattackstomanagingunwantedscriptedtrafficandfraud,wearethegatekeepersofsecuredigitalaccess.Wecollaboratecloselywithnetwork,infrastructure,andproductteamstoensurethateveryingressflow—acrossallwebproperties—issecure,resilient,andadaptivetoevolvingthreats.Ourteamthrivesonsolvingcomplexsecuritychallengesinafast-paced,high-impactenvironment.

What you'll do...

• Create,tune,andenforceWebApplicationFirewall(WAF)policiesacrossglobaleCommercesites
• Continuouslyevaluateandadaptingresssecuritypoliciesbasedontheevolvingthreatlandscape
• Matureourclient-sideevaluationandfingerprintingcapabilities
• Assessandmanageprotectionstrategiesduringactivecyber-attacks
• Controlandmonitorscriptedtrafficacrossalldigitalproperties
• Collaboratewithnetworkandsitereliabilityteamstosecureallingresspoints
• Build,deploy,andmanagesecurityinfrastructureandoperationstosupportoverallwebsecurity

What you'll bring:

• Hands-onexperiencewithWebApplicationFirewall(WAF)managementandDDoSmitigationstrategies
• StrongknowledgeofnetworkandwebprotocolssuchasTCP/IP,IPSec,HTTPS,andSSL
• DeepunderstandingofhowwebpropertiesandContentDeliveryNetworks(CDNs)function
• Experiencewithclient-sidefingerprintingandbehavioraldatacollection
• ProficiencywithlogmanagementtoolssuchasSplunk,Kibana,orArcSight
• Strongscriptingskillsinatleastonelanguage
• FamiliaritywithcloudplatformsincludingAzureandGCP

Bonuspointsfor:

• Asecurity-firstmindsetandsolidfoundationinkeysecuritydomains:applicationsecurity,networksecurity,architecture
• Knowledgeofnetworkandsecuritytoolsandprotocols,includingFirewallsandDNS
• Stronganalytical,problem-solving,andinterpersonalcommunicationskills

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more. You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. For information about PTO, see https://one.walmart.com/notices . Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities. Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms.

For information about benefits and eligibility, see One.Walmart .

Sunnyvale, California US-11656: The annual salary range for this position is $117,000.00 - $234,000.00

Herndon, Virginia US-10710: The annual salary range for this position is $108,000.00 - $216,000.00 Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include :

- Stock

Minimum Qualifications...

Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications.

Option 1: Bachelor's degree in computer science, information technology, engineering, information systems, cybersecurity, or related area and 2years’ experience in systems and infrastructure engineering or related area at a technology, retail, or data-driven company.

Option 2: 4 years’ experience in systems and infrastructure engineering or related area at a technology, retail, or data-driven company.

Preferred Qualifications...

Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.

Certification in Security+, GISF, CISSP, CCSP, or GSEC, Master’s degree in Computer Science, Information Technology, Engineering, Information Systems, Cybersecurity, or related area, We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Primary Location...

1375 Crossman Ave, Sunnyvale, CA 94089-1114, United States of America Walmart and its subsidiaries are committed to maintaining a drug-free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. This policy applies to all employees and aims to create a safe and productive work environment.

Walmart is committed to maintaining a drug-free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. This policy applies to all employees and aims to create a safe and productive work environment.

Benefits you’ll enjoy

Discount Card

Get 10% off

Walmart associates are eligible for a 10% discount card on most regular-priced items and fresh produce in-store and on select items at Walmart.com. Eligible after 90 days of employment.

Live Better U

100% covered

Earn a degree or in-demand skills certificates with no debt- Walmart covers 100% of tuition and books. Live Better U offers 60+ programs for Associates to pursue their dreams.

Ready to grow your career? Walmart Academy offers job-specific retail training and leadership courses to help Associates reach their career goals.

Enjoy 401(k) matching and stock purchase plans.

Paid time off

Take a break as needed for vacation, sick leave, holidays, parental leave, and more

Medical, dental, vision, and wellness programs for you and your family

Access mental health resources and assistance programs for life’s challenges

Training, leadership programs, and clear paths to advance.

Imagine a workplace surrounded by innovation.At Walmart’s new Home Office in Bentonville, Arkansas, we’re redefining what it means to work at a global leader.

Set on 350 acres of thoughtfully revitalized land, our new campus seamlessly integrates the charm of Northwest Arkansas with cutting edge design and technology. From biking trails and outdoor courtyards to flexible, tech-enabled workspaces, every detail reflects our commitment to sustainability, connection, and culture.

With amenities like on‑site childcare at our Little Squiggles Children’s Enrichment Center, the Walton Family Whole Health & Fitness Center, and a vibrant food hall featuring local and international favorites, we’re creating a space where work‑life balance isn’t just a goal—it’s a reality.

Beyond the campus, Bentonville offers a dynamic lifestyle with world‑class dining, art at the Crystal Bridges Museum, and countless outdoor activities.

Whether you’re exploring High South cuisine, enjoying live performances at our new amphitheater, or cycling the Razorback Greenway, you’ll experience the perfect blend of small-town charm and big-city amenities.

Join us at Walmart and grow your career alongside a community that feels like home.

This isn’t just a workplace—it’s a destination for leaders eager to make a difference.